Bislett 3 lap reps, 5'34, 5'28, 5'25, 5'31, 5'36. Tiring. Lots of data to analyse soon - new 620. Max about 171. Probably went a bit hard but big improvement from last set. 1' rec
5*4', 6%. Started at 16k/h - made the first 6' then slowing to 15k/h. Changed to normal treadmill and speeded back to 15.5k/h - seems to be a bit of a difference that did not help me.